Allied Telesis AT-VP504E FXS User Manual page 22

Appendix A - Glossary
Switched Circuit
Network (SCN)
T.38 An ITU-T Recommendation for Real-time fax over IP. T.38 addresses
Telephony The science of translating sound into electrical signals, transmitting
Terminal Device capable of sending or receiving data over a data
Transmission Control
Protocol/Internet
Protocol (TCP/IP)
Trivial File Transfer
Protocol (TFTP)
Voice Over IP (VoIP) The technology used to transmit voice conversations over a data
Wide Area Network
(WAN)
AT-VP504E FXS
A communication network, such as the public switched telephone
network (PSTN), in which any user may be connected to any other user
through the use of message, circuit, or packet switching and control
devices.
IP fax transmissions for IP-enabled fax devices and fax gateways,
defining the translation of T.30 fax signals and Internet Fax Protocols
(IFP) packets.
them, and then converting them back into sound.
communications channel.
A suite of communications protocols developed by the Department of
Defense in the 1970s that connects hosts on the Internet and provides
the standards for transmitting data over networks.
Allows for transferring files (such as software upgrades) from a remote
device.
network using the Internet Protocol. Such data network may be the
Internet or a corporate Intranet.
A computer network where the computers are not geographically close
and are linked by telephone lines or radio waves.
User's Manual (SIP/MGCP Version)
18